Voice 1: Innocent uses Nile Perch fish to make the shoes. He takes them from the nearby Lake Victoria. The Nile Perch have not always been present in the lake. People released them into the water fifty years ago. It was part of an experiment. The experiment was to create a new industry for local people. But many people were concerned at the time. They believed that the Nile fish would eat other local fish. They have been proved right. Many smaller kinds of fish have disappeared. In the past, seventy percent of fish in Lake Victoria were Haplochromis - small boney fish. But over the past fifty years that has decreased to one per cent. Nile Perch can grow up to two metres long. They can weigh two hundred kilograms. They have competed with the other fish for survival - and they have won!

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